kotlin not supporting Socket IO in android

Question

I have two questions

1)My Project contain dagger2,retofit2,kotlin v1.0.21,rxJava2,OkHttp3 i want to implement SocketIO on my project how should i implement?

2) I try to several way but unable to connect socketIO so i try to sample code below given code but still unable to connect socket.. please help thanx in advance

 package com.easymakers.myapplication

import android.os.Bundle
import android.support.design.widget.Snackbar
import android.support.v7.app.AppCompatActivity
import android.view.View
import io.socket.client.IO
import io.socket.client.Socket
import io.socket.emitter.Emitter

import kotlinx.android.synthetic.main.activity_main.*
import javax.net.ssl.SSLContext


class MainActivity : AppCompatActivity() {
    private var socket : Socket? = null

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        setSupportActionBar(toolbar)

        fab.setOnClickListener { view ->

            connect(view)
         //   connect1()
        }
    }

     private fun connect(view : View) {
         val opts = IO.Options()
         opts.port= 5000
         opts.reconnection = false
        // opts.query =
         socket = IO.socket("https://192.170.1.21",opts)
        socket?.connect()
                ?.on(Socket.EVENT_CONNECT, {
                    Snackbar.make(view, "Socket connected", Snackbar.LENGTH_LONG)
                            .setAction("Action", null).show()
                })
                ?.on(Socket.EVENT_DISCONNECT, { println("disconnected") })
    }

    private fun connect1(){
        val sc = SSLContext.getInstance("SSL")
        sc.init(null, null, null)
        val opts = IO.Options()
        opts.port = 3000
        opts.secure = true
        opts.forceNew = true
        opts.reconnection = true
        val  socket = IO.socket("https://103.69.190.10",opts)
        socket.on("connection", Emitter.Listener {
            println("Connected")
            socket.emit("foo", "hi")
            socket.disconnect()
        }).on("event", Emitter.Listener { }).on(Socket.EVENT_DISCONNECT, Emitter.Listener { })
        socket.connect()
    }
}

Answer 1

I used this library Socket.IO

With this code it was enough on method OnCreate. Even with an authentication token, but it's optional.

val opts = IO.Options()
    opts.query = "token=XXXXXXXXX"
    var socket = IO.socket("https://MYSERVERSOCKET.com", opts)

    socket?.on(Socket.EVENT_CONNECT, {
          Log.d("","==============================CONNECTED")
    })?.on(Socket.EVENT_DISCONNECT, {
          Log.d("","==============================OFF")
    })

Start the connection

btnFindNext.setOnClickListener{
        socket.connect()
}

and an example of emit

btnOtro.setOnClickListener{

        val obj = JSONObject()
        obj.put("var1", "5ab0a8931522f51fac37f5a1")
        obj.put("var2", "91.8392894")
        obj.put("var3", "-93.8392894")

        socket.emit("SendData", obj)
    }

Answer 2

1.1) https://github.com/socketio/socket.io-client-java

Gradle

Add it as a gradle dependency for Android Studio, in build.gradle:

compile ('io.socket:socket.io-client:1.0.0') {
  // excluding org.json which is provided by Android
  exclude group: 'org.json', module: 'json'
}

Socket.IO Server 1.x suppport

The current version of socket.io-client-java doesn't support socket.io server 1.x. Please use socket.io-client-java 0.9.x for that instead.

1.2) in github you may see: this link follow you to the updated version which support 1.x and upper server versions. link: http://socketio.github.io/socket.io-client-java/project-summary.html

it have next dependency:

compile 'io.socket:socket.io-client:1.0.0-SNAPSHOT'

2) https://socket.io/get-started/chat/

Next step you must start node.js server

Integrating Socket.IO is composed of two parts:

1) A server that integrates with (or mounts on) the Node.JS HTTP Server: socket.io

2) A client library that loads on the browser side: socket.io-client During development, socket.io serves the client automatically for us, as we’ll see, so for now we only have to install one module:

npm install --save socket.io